Transmission problem

Uzuorji Technician Lagos, Nigeria Posted   Latest   Edited  
Question
Drivetrain
2011 Mercedes-Benz CLS350 3.5L 7-spd

Hi DN, pls I really need help on this one. Customer brought in this vehicle complaining that the vehicle jerks when she is driving. I checked and discovered that when the vehicle is cold, it attempts to move fine but once it gets hot it stops shifting and even stops moving. After scanning, the tool says there us transmission slip. We changed the transmission(a used one). On testing the new transmission, the same thing happened so I began to suspect the conductor plate. After changing the conductor plate and programing it, the condition of the vehicle is still the same . Don't know what else to do. Thanks in advance.

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Solaman Owner/Technician
Chaguanas, Trinidad and Tobago
Solaman Default
 

Hi,did you replaced the torque converter of have it rebuilt,you may have internal failure (friction plates,seals sprag bearing etc) open the original transmission and take a peep.

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Uzuorji Technician
Lagos, Nigeria
Uzuorji Default
 

Yes I replaced it with the new used one. What happens if I disconnect the conductor plate wire

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Max Owner/Technician
East Wenatchee, Washington
Max Default
 

Did you use a new torque converter or at least the one in the new Used transmission?

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Uzuorji Technician
Lagos, Nigeria
Uzuorji Default
 

Yes I used the new used one

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Mike Technician
Salina, Kansas
Mike Default
 

On the used transmisson could it have same problem inside it what did the fluid smell like did u pull the pan change out the filter . My person living next door her son has one the pump went out on , can you put a set of gages on it to check psi on it when hot and cold

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Mike Owner/Technician
Silverdale, Washington
Mike Default
 

What are the specific codes that you are getting?

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Uzuorji Technician
Lagos, Nigeria
Uzuorji Default
 

Transmission slip codes

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Mike Owner/Technician
Silverdale, Washington
Mike Default
 

I need the exact fault codes with code #'s. This transmission can set multiple codes for slipping. Some can be a simple speed sensor problem or a major internal problem. Hopefully you have a pre scan report, then post repair reports. Were the adaptive learns reset

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Karl Owner/Technician
Reading, Pennsylvania
Karl Default
 

Did you drop the pan on the original and look what kind of damage was inside? Did you flush or replace the cooler? Are you sure this is definitely an internal transmission problem?

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Victor Owner/Technician
Doral, Florida
Victor Default
 

Check for an overheat condition.

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Mike Owner
Cromwell, Kentucky
Mike Default
 

Need specific transmission codes, but many times what happens on these is the filter will get restricted with metal and debris and quit pulling. When you shut the engine off, the debris will drain out of the filter enough to pick up fluid again, until it gets restricted again. If the original had a lot of metal in the pan, and you didn't thoroughly flush the cooler or replace it, it could be a…

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